from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import numpy as np
 
 
fig = plt.figure()
ax = fig.gca(projection='3d')
 
# Make data.
X = np.arange(-10, 10, 0.005)
Y = np.arange(-10, 10, 0.005)
X, Y = np.meshgrid(X, Y)
R = X**2 + Y**2
Z = 0.5 - (np.sin(np.sqrt(R)) ** 2 - 0.5)/(1 + 0.001 * R ** 2)
 
# Plot the surface.
surf = ax.plot_surface(X, Y, Z, cmap=cm.coolwarm,
                       linewidth=0, antialiased=False)
 
# Customize the z axis.
ax.set_zlim(-1.5, 1.5)
ax.zaxis.set_major_locator(LinearLocator(10))
ax.zaxis.set_major_formatter(FormatStrFormatter('%.02f'))
 
# Add a color bar which maps values to colors.
fig.colorbar(surf, shrink=0.5, aspect=5)
 
plt.show()
